Fresh off a victory last night in the Nationwide Series, pole sitter Kyle Busch is trying to run away with the NRA 500 at Texas Motor Speedway. He has paced 129 of 167 laps so far, and is one of just two drivers tonight to lead a double-digit number of laps (Martin Truex Jr. is the other with 33 laps led so far).

Busch had a 2.8-second lead over Jeff Gordon before a caution flag for debris on Lap 149 erased it. However, he was able to hold onto the lead over Gordon on subsequent stops with help from having the first stall on pit road.

Dale Earnhardt Jr. has had a steady run to third position, while Truex sits in fourth and Kurt Busch runs in fifth.

After having the rear-end housing of his car confiscated in pre-race inspection by NASCAR, Brad Keselowski’s night has gotten worse. He has gained one of two laps back that he lost in the race’s first half, but is mired toward the rear of the field. His Penske Racing teammate Joey Logano also had the rear-end housing taken from his car, but has had slightly better luck and is currently in the Top 20.

Kevin Harvick may be having the drive of the night outside of Kyle Busch at the front. Harvick is on his third engine of the weekend and had to start at the rear of the field, but has charged his way up to tenth at halfway.

It’s known as “Carburetor Day” – or in its simplest term, just “Carb Day.”

But the final day of on-track action Friday at Indianapolis Motor Speedway before Sunday’s 102nd Running of the Indianapolis 500 is so much more.

Especially on NBCSN, which will have wall-to-wall live coverage starting Friday morning.

Here’s how Friday’s schedule breaks down:

11 a.m. ET: Carb Day kicks off with the final practice for Sunday’s Indy 500. The session will last one hour in length.

12 p.m. ET: We’re going racing! Strap in for coverage of the Indy Lights’ Freedom 100 on the famous Brickyard.

1:30 p.m. ET: We’ll have coverage of the annual IndyCar Pit Stop Challenge. Which teams have the best – and most importantly, fastest and accurate – pit crews? Team Penske has won 10 of the last 12, including the last two years edging out Schmidt Peterson Motorsports each time. Who can potentially beat them this year?

1) 2016 Indy 500 winner Alexander Rossi will discuss how it used to upset him when people suggested he “backed into” his big win and how he didn’t really feel vindicated until he qualified on the front row for last year’s race.
2) Defending 500 winner Takuma Sato, the first Japanese driver to ever win at Indianapolis, discusses the impact of his big win personally and professionally, particularly back in his native land.
3) An essay by Robin Miller on Stefan Wilson giving up his ride last year to allow Fernando Alonso to race for Andretti Autosport.